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How can I get the client's IP address in ASP.NET MVC?
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edited Jun 14 '14 at 5:52
answered Sep 8 '11 at 13:23
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Principal component analysis in Python
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11 Answers
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Compare if BigDecimal is greater than zero
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416
It's as simple as:
if (value.compareTo(BigDecimal.ZERO) > 0)
The documentation for compar...
In Typescript, How to check if a string is Numeric
...y to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected wi...
Does the ternary operator exist in R?
... returns the latest evaluation, if-else is equivalent to ?:.
> a <- 1
> x <- if(a==1) 1 else 2
> x
[1] 1
> x <- if(a==2) 1 else 2
> x
[1] 2
The power of R is vectorization. The vectorization of the ternary operator is ifelse:
> a <- c(1, 2, 1)
> x <- ifelse(a=...
Add subdomain to localhost URL
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Unfortunately, because localhost is not a proper domain, you can't add a subdomain to it like ...
How to run cron job every 2 hours
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edited Jul 14 '18 at 14:09
Mark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
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How to get the seconds since epoch from the time + date output of gmtime()?
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126
If you got here because a search engine told you this is how to get the Unix timestamp, stop r...
Seeding the random number generator in Javascript
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13 Answers
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